Founded in April 2, 2002, Chongqing Yeasn Science & Technology Co. Ltd(Yeasn) is a leading company with 145 staffs , focusing on R & D, manufacturing, sales, and service of optical and ophthalmic instruments. It is committed to providing professional products and services for medical institutions, optical industry, testing institutions, higher education institution, etc. It’s national high-tech enterprise, national Intellectual Property Advantage Enterprise, Chongqing Enterprise Technology Center, manufacturing enterprise for medical device, manufacturing enterprise for measuring device, and member of national optical and optical device standardization technical committee and council member Chongqing optical academy, Chongqing Optical Association Vice President Unit.

Yeasn strictly adheres to international standards and national standard in product design and manufacturing process, and participates in international and national standards establishment of many optical products. The company has obtained many national patents and CFDA, FDA, CE and other international authoritative certifications in slit lamps, auto refractometer, vision tester, lensmeter, PD meter and other products. The “YEASN” brands have completed the trademark registrations in China, the United States, India, Brazil, Turkey and other countries.